Among the tools which are used to record for presentations purpose that might supposed to be many features and takes its own time, here is a free Screen recording software  iCore.

iCord will produce standard, editable, AVI files from screen capture videos in the simplest manner possible. An uncomplicated interface with simple and easy functions screen recording, pausing and stopping.

Recording is possible only with 800 x 600 resolutions which will be switched to it, once you run the iCord. This portable tool which doesn’t require any installation, though iCord Screen Capture does not have in depth feature capable for handy and easy use. Expectable more features soon, as iCord still in beta.